CN1431945A - Tools for tensioning or loosening/opening spring clips - Google Patents

Abstract

The invention relates to a tool for tensioning or releasing/opening a spring clamp, in particular for tensioning or releasing/opening a hose clamp (1) having two actuating arms (2, 3) which project radially outward, having a flexible cable (11), a tensioning part (12) which engages on the clamp arms and having a stop device (26) on the other side of the actuating part (10). The design and adaptation of the actuating part (10) and of the locking device (26 to 32) is such that, by means of stroke locking, a plurality of short tensioning strokes are each carried out until the necessary tensioning total stroke is achieved. The hose cuff can thus be easily opened to an optimum extent by pressing the operating portion with one hand.

Description

Tools for tensioning or loosening/opening spring clips

The invention relates to a tool for tensioning or loosening/opening spring clips according to the preamble of claim 1, in particular to a tool for tensioning or loosening/opening, for example in the field of automobile construction Tools with hose ferrules having two arms projecting outwards at an opening angle of less than 80°.

The screw-on hose clamps known hitherto used in motor vehicles have recently been replaced by self-tensioning spring hose clamps. Through the latter, for example, the connection of cooling water lines to the cooler and to the engine can be produced. To loosen such spring clips it was often previously necessary to use relatively large and thus inconvenient pliers.

Disclosed in DE 33 43 501 C1 is a kind of tool that is used to expand the spring ring hoop, and its manipulation part is to be used for the cartridge-gun design of sealing-and bonding material. The push rod has toothing in the longitudinal direction, which cooperates with the advancing and locking ratchet. At the outer end of the longer and thicker shaft of the actuating part there are two reliefs which have bearing surfaces for spring arms suspended at an angle greater than 180° relative to one another. In addition, the push rod is a pressure piston structure, the middle of which presses on the ring fixed on the arm, so that it is opened. The tool can therefore only be used in unobstructed contact positions, specifically for spring collars with substantially diagonally opposite arms, and not for spring collars with arms at an angle of less than 180° to one another. Furthermore, the advance via the push rod toothing prescribes a minimum tensioning distance, so that a minimum tensioning stroke cannot be achieved steplessly.

In WO98/26904, DE 296 03 425 U1 and the "PROFITEC" catalog published by Pascheke, page 27, "New Technology '96" discloses various hose collar pliers, which are used for hose clamps Tensioning, stopping and unloading of ferrules. The hose ferrule pliers are each composed of a pliers-like operating part, one end of the flexible cable, namely the core and the sheath, is fixed on the front clamping arm of the operating part, so that when the clamp-handle is clamped The arms open and thus the core of the flexible guy can be pulled out of the clip arms. At the other end of the flexible cable is fixed a clamping part consisting of two tensioning slides movable relative to each other, by means of which the hose collar arm is caught and by the actuating part Compressed when the flexible guyline core is pulled. The clamping diameter of the ferrule is thus increased so that the ferrule releases the hose. This known hose ferrule pliers additionally has a stop which locks automatically when the necessary tensioning stroke is reached, so that the pliers do not have to be kept pressurized by hand and can be released simultaneously. The ferrule is removed together with the clamping part fastened to it and, if necessary, the hose. In this known hose clamp, the entire tensioning or loosening stroke can be realized by a single compression of the arm of the actuating part, wherein there is only one specific stroke length. Different strokes and thus different tensioning and loosening of the ferrule are therefore not possible. In addition, the substantially parallel slides of the tensioning part surround only the outwardly facing side and the side edge of the collar tensioning arm. When the arms are pressed correspondingly strongly and the arms are almost parallel to each other in the loosened state of the hoop, the tensioning slider can easily slip off from the arm, so the operation when the spring hoop is tensioned or opened Not sufficiently reliable. Finally, due to the relatively long rigid travel of the tensioning slide, it is not possible, or at least not possible, to use it optimally in difficult-to-reach locations.

The object of the present invention is to propose a tool which is simple and reliable in construction and use, allows various and optimal applications even in difficult-to-reach positions, and allows infinitely short tensioning strokes, while The locking length does not have to be predetermined.

This object is achieved by a tool having the features of the characterizing part of claim 1 . Advantageous developments of the invention are given in the dependent claims.

According to the design and cooperation of the actuating part and the stop device arranged on the actuating part according to the invention, it is possible to use a stroke stop until the necessary or required tensioning is achieved - before the total stroke, respectively, an infinitely many short strokes of arbitrary length can be realized. Tensioning stroke. This has the advantage that a specific pre-adjusted overall tensioning stroke is no longer achieved with a single pressing of the handle of the operating part, especially when a pressing that is impossible with a larger hand has to be achieved - When tensioning the path. According to the invention, the total tensioning stroke can be achieved on the tensioning slide with arbitrarily limited steps no longer by means of ratchets etc. by means of several pressing-movements on the actuating part and each by very short "pump" movements. Multiple consecutive shorter tensioning strokes of length. This requires little effort and can be operated with one hand, so that at the same time it can be checked with the other free hand whether the collar has been loosened enough to separate from the hose or together with the hose, for example, from the engine .

Beneficially, the manipulating part of the tool of the present invention is mainly designed for the known cartridge-gun of sealing-and bonding material-cartridges, and said manipulating part has an intermittent short stroke through the push plate and Smooth push rod that moves the stop lever forward. Cartridge guns currently available on the market can be used in this. But in order to achieve a continuous push of the push rod without predetermined step units, there is a smooth push rod (without ratchet and rack) with intermittent fit push plate and stop rod. In principle, it is only necessary to remove the gun-shaped protruding half-slot for the cartridge on the casing and to shorten the push rod due to the short stroke and fix a controllable flexible cable. According to the invention the flexible guy cable is fixed on the front side of the front casing of the operating part, wherein the flexible cable-sheath is fixed on the front outer end of the push rod and the flexible cable core is fixed on the casing near the outlet of the push rod end side. When the push rod is pushed over the sheath, the core protruding from the sheath at the other end of the flexible cable is drawn into the sheath and shortened, and the slider is tensioned or drawn closer.

Advantageously, a clamping body is fastened to the front end of the push rod, said clamping body having a clamping hole of the flexible cable parallel to the push rod fixing hole, radially offset. When the clamping body is detachably fixed on the push rod and at the same time the flexible guy wire core is detachably fixed on the outer end side of the body, for example by a clamping screw acting in the radial direction, the flexible guy cable core cannot When fixed removably on the flexible guy cable or together with the flexible guy cable on the clamping body, the manipulating part can then be quickly and easily removed from the flexible guy cable and can additionally be combined with other similar flexible cables. Lanyards work in tandem. Obviously, the fixing is thus achieved by the fixed snapping of the flexible guy wire when the collar spring is in tension, i.e. open or loose, and thus the bent flexible guy wire can be easily connected to the opened/tensioned spring sleeve. The hoops are removed together, and the disconnected flexible guy wires together with the now free manipulating section tension or loosen the other hoops. The manipulating part can thus constitute a multipurpose tool set together with the flexible guy wire and the tensioning slide.

If a fixed body is detachably arranged on the outer end side of the front casing, the push rod passes through the fixed body and the core end is for example easily hung on or easily snapped on the fixed body in other known ways. On the body, the core end on the housing side is particularly easy to disassemble from the housing. Of course, the fastening body can also be fixedly arranged on the end side of the housing or on a housing part.

The clamping body fixed on the push rod can preferably also be a multi-clamping body, that is, there can be a plurality of clamping holes that are symmetrical to the clamping hole used to clamp the push rod, such as the clamping of three flexible lanyards. hole. Of course, there can also be several suspension or fastening devices for the cores of several flexible cables on the fastening body. The opening or closing of all collars of a structural unit of a vehicle, for example all three collars of the cooler connection, i.e. the collars for the inlet, outlet and ventilation respectively, are thus carried out simultaneously in one step with a single actuating part hoop. Furthermore, after opening it is also possible to clip all three flexible cables on the clamping body, which can be detached from the push rod and the core together with the fastening body easily and without cumbersome handling Down until appropriate repairs are made, reconnect the hose and unload the ferrule by rehanging or clamping and unloading the manipulating section. Said unloading takes place essentially in the same way as in a cartridge gun, namely by pressing the stop lever so that the push rod is released. But in the cartridge-gun, the push rod must be pulled back after releasing the stop lever by hand, while in the present invention the reset of the push rod is realized by the spring force of the hose collar, i.e. automatically .

A particular advantage of the invention is that the two tensioning slides are essentially loose separate slides which are guided loosely on the flexible cables. Wherein the outer end of the sheath of the flexible cable is fixed on the pierced hole of the first sliding block, and the core end protruding from the other end of the sliding block is fixed on the second sliding block. The two slides have a transverse slot with a transverse stop, through which the slide is radially slipped onto the spring collar arm. Therefore, when the flexible guy cable is unloaded, the slide block can be radially sleeved on the collar arm at any position of the collar and the collar arm, and tensioned thereafter. The slider cannot slip off the collar arms even when the collar arms are tensioned in an approximately parallel orientation. Transverse-the sleeve seam is perpendicular to the pulling direction, that is, perpendicular to the extension of the flexible lanyard, and parallel to the outer circle of the hoop at the end of the spring hoop arm, and the slider can also be socketed parallel to the hoop arm.

The advantage of the ease of installation of the two loose slides can also be achieved in that the end of the flexible cable is not fixedly arranged on the second slide, but for example via a Convenient hanging realized by slit. To avoid slipping, the core end has a hanging portion which can be a shackle or a cylindrical or conical thickening. Of course, the end side of the support for the suspension part can have a corresponding recess, for example a hole coaxial to the suspension slot, in which the suspension block is accommodated and supported coaxially. However, it is also possible for the flexible guy wire core to be suspended through the first slide. For this purpose, the front end of the flexible cable sheath must have a pressure piece, which bears against the end side of the first slide when the flexible cable is actuated. The two sliding blocks can therefore be constructed identically on their upper sides, that is to say have a flexible guy-core insertion slot and, if necessary, have a supporting end for the core and a flexible sheath on one of their outer ends. Clearance at the compression end of the sleeve.

Instead of a shoe-shaped sliding block that slides radially onto the collar arm, a frame ring can be used, which can be suspended from the collar arm. In this case, a frame ring can be provided for each of the two arms. However, instead of the first tensioning slide, it is also possible to provide only one tensioning strip and instead of the second tensioning slide, to provide a frame ring, the tensioning beam and the frame ring being fastened directly on the sheath and the core or respectively The brackets are fixed by means of angle brackets, so that the frame acts directly on the bottom of the arm and further increases the tensile force and thus the tensioning moment.

However, the two tensioning slides are in a further sense similar to the tensioning parts of the above-mentioned known hose collar clamps, and are slidingly coupled to each other via a push arm, wherein according to the invention, the push arm is preferably formed by a ring on the collar circumference. It consists of elastically bent spring steel strips in one direction. An adjustment of the mutual angle of the two slides and their receiving transverse openings is thus possible. An adaptation of the slider to the angular orientation of the unloaded or fixed hose collar arm and generally radial fitting on the arm can thus be achieved. In this case, the spring arm protruding on the second slider in the tensioning-traction direction and pushing the first slider in this direction has only a very short distance even when the two sliders are in the maximum opened state. A portion protrudes from the first slider and has a hanging hole at the protruding end. The flexible lanyard core is suspended from the suspension hole, for example by means of a hook, wherein the flexible lanyard sheath is fixed on a pressing body which axially connects the core protruding from the sheath and the The spring arms protruding from the first slide overlap while their end faces bear on the outer end faces of the first slide. When the tool is actuated, the core is fixed and the sheath is pushed forward together with the pressure body so that the first slide is pressed against the second slide. The arms of the spring collar in the slide receiving slot are thus pushed towards each other and the spring collar is opened or loosened. In addition, the clamping of the spring arm passing through the slider can be achieved through a clamping bolt arranged on the first slider, so that the clamped ferrule arm can be fixed at this position, and the flexible The guy wire is taken off from the tensioner.

It is advantageous to have a substantially U-shaped retaining frame for axially sliding over the actuating arm of the clamped or tensioned collar. This makes it possible to securely hold the clamp arm in the tensioned state, so that the tensioning slide can be removed from the clamp arm and the entire tool can be used for another purpose. When it is necessary to retension the ferrule on e.g. a hose, it is only necessary to pull out or press the clamping frame with pliers or a screwdriver with a rod-like fit, after which the ferrule shrinks elastically and the ferrule arms separate tangentially .

The clamping frame can be formed in one piece or consist of two mutually movable slide parts, which can be moved into the desired opening position using known stop means such as clamping rods or clamping bolts. fixed. However, the two-element design described is only intended to achieve relatively rapid fixation.

The present invention will be further described below with reference to multiple embodiments and with reference to the accompanying drawings. The figure shows:

Fig. 1 is the perspective view of known spring hoop;

Fig. 2 is respectively the axial view of spring hoop shown in Fig. 1 in tensioned state (shown in dotted line) and unclamped state;

3 is a longitudinal-axial sectional view of the first embodiment of the present invention;

Fig. 4 is a sectional view of Fig. 3 VI-VI;

Fig. 5 is a V-V sectional view on the joystick in Fig. 3;

Fig. 6 is a perspective view of the tensioning part of the first embodiment of the present invention;

Fig. 7 is the outer end side view of the second slider;

Fig. 8 is a vertical sectional view of the slider shown in Fig. 7;

Figure 9 is a perspective view of the tensioning portion of the second embodiment, with tensioning slats and tensioning frame rings;

Figure 10 is a perspective view of the tensioning section of the third embodiment with two frame rings with curved fixing arms;

Figure 11 is a perspective view of a tensioning section of a fourth embodiment with tensioning slides connected by a movable spring arm;

Figure 12 is a side view of a tool of a second embodiment with a steering rod and tensioning means for three flexible guys;

Figure 13 shows a fixed body with a single guy wire clamp, suitable for the tool shown in Figure 12;

Figure 14 is a perspective view of the integrated retaining frame, and

Fig. 14 is a perspective view of a binary adjustable holding frame.

As shown in FIG. 1, a hose collar 1, especially for use in the automotive sector, has a narrow collar arm 2 and a wide collar arm 3, said collar arm is substantially radially formed with an inner clip A collar 4 of fixed diameter protrudes. In this case, the wide collar arm 3 has an outwardly bent projection 6 towards the narrow collar arm 2 .

Figure 2 is a view of the ferrule shown in Figure 1 in the axial direction, where the ferrule is in an unloaded state, which can also be, for example, a state where a hose is clamped, and the dotted line in the figure shows the same ferrule 1 The tensioned state, that is, the two ferrule arms 2, 3 are pressed against each other, so that the clamping diameter 5 acts as an expanded clamping diameter 7, which shows that the ferrule of the fixed hose is loosened state. When the hose collar 1 is released, the two collar arms 2 , 3 are clamped and pressed against each other by corresponding tensioning elements of the tool, while the two arms spring off each other again when unloading And squeeze and fasten the outer circle of the hose on the corresponding components.

The tool of the first embodiment shown in FIGS. operatively connected to ferrule 1.

The structure of the manipulating part 10 is almost the same or at least functions the same as the manipulating part of the known sealing-and-bonding-material cartridge-gun, the only difference being that there is no accommodating groove for the forwardly protruding cartridge of the cartridge and the pushing The rod is shorter. The actuating part has a housing 13 in which the push rod 15 passes through a top 14 movably and the housing has a substantially U-shaped housing arm 16 extending downward. On the casing 13 and to be precise, there is an operating part arm 17 pivotally connected to the rotating shaft 18 and a straightly extending push arm 19 in the upper region of the casing arm 16, on the upper push rod 15 below the push arm One end is fixed with a pressing rod 20. Moreover, the manipulating section arm 17, as shown in FIG. 5, also has a U-shaped cross section.

In the inside of the casing-top 14 a push plate 21 is slidably 21 arranged on the push rod 15, and the operating part arm 17 is arranged on a lower section of the push plate under the pressure of the compression spring 22, which presses The spring 22 is guided on the push rod 15 between the end wall 23 and the push plate 21 . Wherein the design of the inner hole 24 of the push plate 21 that cooperates with the diameter of the push rod 15 passing through the inner hole should make the manipulating part arm 17 that is rotated pass through when manipulating the tool, that is, when pressing the manipulating part arms 16 and 17 Its push arm 19 and pressure rod 20 eccentrically press the push plate 21 forward, so that the push plate is inclined on the push rod 15 through the inner hole and the push rod is correspondingly moved forward. In order to further enhance this follow-up and to achieve a reliable engagement of the push plate on the push rod, the upper side of the push rod 15 can have longitudinal cutouts, as is also known from cartridge-gun push rods. When then the manipulation arm 17 was unloaded, the stage clip 22 pushes the push plate 21 back to the back and the arm 17 is rotated back to the original position.

Arranged on the rear side of the housing top 14 is a locking lever 26 as a locking device, said locking lever having a locking hole 27 through which the push rod 15 passes. The stop bar 26 has a downwardly protruding unloading arm, while the upper part of the stop bar has a hyperbolic suspension arm 28 which passes through a recess on the back wall of the cabinet-top 14 via its external suspension projection. The corresponding socket realizes the suspension, so that the stop rod 26 realizes the rotation setting through the suspension on the casing. A compression spring 31 is arranged between the stop lever 26 and the back wall of the casing-top 14, and the compression spring always keeps the stop lever in an outwardly pressed position, that is, through its stop hole 27 The position where the slant rests against the outer circle of the push rod. When the push rod 1 is moved axially forward by the operating arm 1, the pressure rod 20 and the push plate 21, the stop rod is also slightly rotated forward, so that the hole 27 releases the push rod, and the push rod can move forward in the hole. slide. But stage clip 31 makes stop bar 26 press push rod 15 backwards by stop hole 27 all the time, thereby push bar 15 can not realize reverse shifting when stop bar is in the inclined position that is pressed backward. When the hands are then loosened and the operating part arm 17 is released, the stage clip 22 makes the push plate 21 move backward again and reset, so that the corresponding elastic follow-up of the operating part arm 17 makes it swing back to the initial position accordingly. Since the push plate 21 is pushed backwards smoothly, ie non-inclined, under the concentric pressure of the spring 22, the push rod 15 does not move or is held stationary by the stop rod 26 when the push plate 21 moves back. The push rod 15 is thus pushed forward by the push plate 21 when the actuating part arm 17 is pressed, wherein the locking lever 26 rests against the push rod in the always-to-be-locked state. When the operating part arm 17 is released, the push plate slides backwards under the effect of spring pressure, at this moment, the stop rod 26 fixes the push rod immediately and prevents it from sliding backwards. Even when the push rod is moved slightly forward due to pressing the operating part arm 17, the push rod 15 can be reliably fixed and held after the forward movement is completed. When the decompression arm below the stop bar was compressed towards the casing direction, the stop bar 27 was swiveled to the release vertical position from the stop inclined position, so that the push rod could return to the unloading position backwards. This return is effected by the force of the spring collar 1 in the tensioning part 12 under tensile stress. The push rod 15 is thus spring back when the locking lever-releasing arm 32 is compressed. When the tension member is not under the action stress, the push rod 15 will not elastically reset and move and must pass through a handle portion arranged at the rear end, shown in the figure as a downwardly bent pulling arm 33 to push the push rod 15 Pull down.

A clamping body 35 is fixed at the front end of the push rod 15, which is designed for eccentric unloading in this embodiment and parallel to the clamping hole 36, through which the clamping body is sleeved on the push rod 15, and the clamping body has A parallel clamping hole 36. The flexible guy cable 11 passes through the clamping hole axially parallel to the push rod 15, so that the outer end of the flexible guy cable-sheath 37 is fixedly clamped, and the flexible guy cable-core 38 protruding inward is fixed and clamped. Parallel to the push rod 15 , it leads to the end wall 23 of the housing top 14 , on which end wall 23 the fixed end 39 of the flexible guy cable core is fixedly arranged.

As shown in Figure 3, the tensioning part 12 is fixed on the outer end of the flexible cable 11, and the said tensioning part consists of two separate sliders 40 and 41. Seam 42 is enclosed within the state on the hoop arm. As shown, the flexible guy wire 11 is inserted into the first slider 40 to which the flexible guy cable sheath end is secured. The outer end of the flexible cable core 38 protruding from the inner end surface of the slider 40 is fixed on the slider 41 . During operation, that is, when the push rod 15 moved forward, the clamp body fixed on the push rod and the sheath of the flexible lanyard fixed thereon were pressed to the front along with it. Since the fixed end 39 of the core 38 of the flexible guy wire is fixed on the casing, the forward movement of the flexible guy cable sheath 37 will cause the core to be pulled out of the sheath upwards in the casing, thereby causing the The protruding part of the upper core of the tight part 12 between the two sliders 40 and 41 is pulled into the flexible cable sheath accordingly, and the space between the two sliders 40 and 41 is reduced simultaneously. By pulling the two sliders 40 and 41 closer to each other, the collar arms 2 and 3 on which the sliders are sleeved are moved toward each other, that is, pressed, thereby realizing the dotted line shown in FIG. The position where the spring collar 1 is released.

FIGS. 6 to 8 show a tensioning element 12 according to a first embodiment of the invention, which essentially corresponds to the tensioning element shown in FIG. 1 . The two sliders 40, 41 are also slider slider structures, wherein the first slider 40 is fixedly connected to the sheath 37 of the flexible cable 11, and the flexible cable passes through the slider. The second slider is not fixedly connected to the end of the core 38 . Here the core 38 can be detachably suspended on the slider 41 via a suspension slider 43 arranged at its end, to be precise, via a suspension slot provided on the upper side of the slider 41 in the pulling direction. 44. In order to realize reliable suspension, a suspension hole 45 is provided on the side facing the outside of the slider, and the suspension hole should be adapted to the shape of the suspension block, so as to realize the suspension embedding of the suspension block in the hole in the pulling direction, The slippage of the core is avoided. Since the core can be detached from the second slider 41, it is easy to fit the two separate sliders on the ferrule arms respectively at positions that are very difficult to access. It is only necessary to push the core end into the second slide 41 in order to establish the corresponding functional connection.

FIG. 7 is an external end view of the slider 41 shown in FIG. 6 . The above-described design is shown with suspension slots 44 and suspension holes 45 for suspension of the core 38 via the suspension blocks 34 . It can also be seen from the figure that guide pins 46 which limit the side of the transverse slot 42 are provided for firmly fitting the slider 41 on the narrow collar arm 2 shown in dotted lines for ease of viewing. Of course, corresponding walls can also be used instead of the guide pins 46 or instead of the transverse slots and the guide pins, sockets for narrow ferrule arms opening only downward can be provided directly on the slide 41 .

It can be seen from the first slider 40 shown in the inner end view of Fig. 8 that on its upper side there is a hole 47 through which the flexible guy 11 passes and the outer sheath end of the flexible guy is secured. in the hole. On its underside there is a rectangular opening 48 extending as far as the transverse slot opening downwards, into which opening the inner projection 6 of the collar arm protrudes when the slider 40 is placed on the wide collar arm 3 . Since the opening 48 laterally surrounds the projection 6 and thus forms a movement limitation of the slider 40 , it is not necessary to use other limiting means in this slider, such as walls closing the transverse slot 42 from the sides.

In another exemplary embodiment of the tensioning element 12 shown in FIG. 9 , instead of the first slide, there is a tensioning web 49 which has an essentially L- or approximately Z-shaped cross section. Instead of the second slide, there is a frame ring 50 , a frame strip of which is fixedly connected to the core 51 . The frame ring 50 is suspended and fitted on the hoop arm through a rectangular opening 51 .

In another embodiment of the tensioning part 12 of the present invention shown in FIG. The cable sheath is connected, but is connected by an L-shaped or Z-shaped curved pulling arm 52 or 53. Wherein the pulling arm can be hinged with the frame ring 50, so that a certain degree of flexibility can be achieved in the case of a highly narrow space. Here, the thinner frame can also be smoothly placed on the hoop arm and passed through the pulling arm. The lateral guidance and therefore practically no height-position requirements mean that the tensioning element with slides 40 , 41 requires vertical insertion space and thus cannot be used in any position. Of course, instead of a closed frame ring, it is also possible to use fork-shaped or hook-shaped rings for pressure (first ring) and tension (second ring).

In the embodiment of the tensioning part 12 shown in FIG. 11 there are again slides 54 , 55 whose nesting structure is essentially the same as that described in FIGS. 3 and 6 to 8 . However, the two slides 54, 55 are not loosely connected to each other via a flexible cable-core, but the outer slide 55 has a strip-shaped spring arm 56 extending longitudinally in the pulling direction, so that The spring arm can move through the first sliding block 54 and the position locking of the spring arm on the first sliding block can be realized by a fixing bolt 57 . At the end of the spring arm 56 protruding from the slider 54 there is a suspension hole 58, on which a suspension hook 59 provided at the end of the flexible guy wire core can be hung. In addition, there is a pressure body 60 on which the flexible guy cable-sheath is fixedly arranged and which has a longitudinal groove 61 below it, in which the core end with the suspension hook 59 is drawn out longitudinally or as shown in Fig. Protrudes from the end side as shown and engages the end of the spring arm. After the hook-core end is suspended on the suspension hole 58, of course, it is carried out under the state that the fixing bolt 57 is loosened. When the tool is manipulated, the push rod is moved forward and the flexible guy cable is moved forward accordingly- During sheathing, the end side of the pressure body 60 rests on the outwardly facing end side of the slider 54 and pushes the slider 54 towards the slider 55, wherein at the same time the flexible guy wire core is fixed to the spring arm by the shackle Keep. It can be seen from the figure that in this embodiment, after the tensioning part 12 is pressed against the spring arm 56 by means of the sliders 54, 55, and thus the hose ferrule is opened, the fixing bolt 57 is rotated and thus By fastening the spring arm 56 on the slider 54, the mutual positional fixation of the two sliders 54, 55 is realized. The flexible guy cable with the pressure body 60 and the suspension hook 59 can thus be removed from the fastened slides 54 , 55 when the tool is unloaded. The flexible lanyard can then cooperate with the other sliders 54, 55 to open other hose collars or to put the tools aside so that subsequent work on the hose or hose collars is not hindered. It can be seen from the figure that by using the spring arm 56 to connect the two sliders 54, 55, the spring arm can realize the bending movement in the slider-insertion direction, which can be bent correspondingly in the best way as shown in the figure As shown by the dotted lines, the sliders 54, 55 are sleeved on the two arms of the spring collar.

In the second embodiment of the tool according to the invention shown in FIG. 12 , the associated tensioning element is not drawn in the drawing. It will be apparent, however, that any tension member 12 shown in Figures 3 to 11 may be used as desired. The manipulation portion 10 of this embodiment basically has the same basic components as those shown in FIG. 3 . In this embodiment, too, there is a housing top 14 and a housing arm 16 , on which the actuating part arm 17 is rotatably arranged via an axis of rotation 18 . The manipulating part arm 17 then acts on the push rod and pushes the latter forward through a push arm, pressure rod and push plate not shown in the figure. But in the present embodiment, instead of directly pressing the arm 17 with hands, a pull bar pivoted by the shaft 73 at the lower end of the casing arm 16 is provided, and the arm 17 is connected with the pull bar through a pin shaft 65 in the elongated hole 66. connect. When the pull rod 64 is pressed, the arm is pressed through the pin shaft 65, so that the push rod 15 is pushed forward through the corresponding other parts. The actuating stroke can be limited by means of an adjusting screw 67 arranged on the tie rod 64 as in the case of a corresponding cartridge gun. Therefore, the specific implementation manner thereof will not be repeated here.

Furthermore, in the present embodiment, a stop lever 26 with an unloading arm 32 is arranged on the rear of the housing, said stop lever being fixedly held by the tension of the compression spring 31 . But here the unloading arm 32 is no longer just a simple smooth downward extension, but a U-shaped structure that surrounds the casing part forward. And the rear end of the push rod 15 is provided with a plate instead of a hook-shaped pull arm. Finally, a hanging ring 68 is arranged on the upper side of the top of the casing, and the hanging ring is integrally formed with the casing. It can be seen from the figure that the casing is an injection molded part, and the casing and the control part arm shown in Fig. 3 can also be light sheet metal processing parts.

In the embodiment shown in FIG. 12 , a mounting body 70 is arranged on the housing end side 71 , through which the push rod 15 is likewise centrally and displaceably passed. The front side 71 of the fastening body 70 here acts as the end wall 23 of the embodiment shown in FIG. 3 . The flexible cable cores 38 are therefore fastened to the fastening body, wherein in the present exemplary embodiment there are three flexible guy cables 11 and therefore three cores are also correspondingly arranged on the fastening body 70 . The fixing body 70 can also be arranged on the casing, and the core can also be fixedly arranged on the casing. However, the core 38 can also be easily hung and detachable on the fastening body 70 by means of correspondingly known measures. Of course, in the embodiment of three flexible cables, the clamping body 35 is also provided with three clamping holes for the flexible cables. It should also be added here that the flexible guy cables are each clamped via clamping bolts 72 so that the core in the sheath is fixed immovably. Therefore, when the tension part is in a tensioned state, the clamping of the flexible guy rope on the clamping body 35 can be released, so that the clamping body 35 and the core 38 can be released from the connection or suspension of the push rod 15 and the fixed body 70 and thus have The tensioning section of the flexible guy line is available as a separate unit. The operating part can then be used for other applications without restriction.

FIG. 13 shows the fixing body 17 removed from the casing, on which only a flexible cable is fastened to the clamping body 35 by means of a fastening screw 72 .

FIG. 14 shows a retaining frame 73 , which is substantially U-shaped and serves to hold the hose ferrules in the squeezed-together, ie opened, hose ferrule via the ferrule arms. Wherein the design of the sleeve opening 74 of the retaining frame 73 should make the retaining frame enclose it in the axial direction under the condition that the hoop arm is correspondingly compressed, and surround it reliably. The ferrule arm bears under pressure on the frame arm after the tool is unloaded. Since according to the invention the tensioning stroke can be realized in correspondingly small individual strokes up to a desired maximum stroke, the tensioning operation can be carried out with one hand after placing the tensioning slide of the tensioning element on the collar arm , until the retaining frame is firmly placed on the compressed ferrule arm with the other hand. Then - likewise with one hand - the tensioning part is unloaded with the actuating part via the unloading arm of the locking lever, so that the spring arm is spring back until it abuts against the holding frame arm and is locked in position there.

Finally, another embodiment of the holding frame 73 shown in FIG. 15 is a binary embodiment. The holding frame here is formed by two frame rings 75 and 76 that are displaceable relative to one another, which are fixed in position relative to one another by means of a clamping rod 77 . The holding opening 74 can thus be adapted to meet certain requirements, or it can also be put on or off more quickly and reliably.

Attachment Label Comparison Table 1. Hoschen Hoe 2. Narrow hoop arms 3. Wide hoop arm 4. Hoe ring 5. Clear diameter 6. Progressive 7. Expanded clamp diameter 8. -9. After that, the expansion diameter. End wall 10. Manipulating part 11. Deeping of 牵 12. Tiring part 13 Case 14. Top 15. Pushing rod 16. Holding the arm of the case 18. Rotating shaft 19. Push arm 20. Pressing pole 21. 21 1. . Push set 22. Pressure spring 23. The front wall 24. Horch 25. incision 26. Stop rod 27. Stop pores 28. Suspension arm 29. Suspension protrusions 30. Plast 31. Pressure spring 32. Unload arm 33. Lead Pull arm 34. -35. Clevey 36. Clevey holes 37. Explanting cable-38. Skillth cable 39. Fixed end 40. Slip 41. Slip 42. Hanging 43. Suspension Block 44. Hanging seam 45. Hanging hole 46. Guide rod 47. Pole 48. Operation 49. Tienca strip 50. Frame ring 51. L-pull arm 53. Z-pull arm 54. slider block 54. slider block 54. 55. slider 56. Spring arm 57. Fixed bolt 58. Suspension hole 59. Hanging hook 60. Voltage 61. -63. Axis 64. Tip 65. Sales axis 67. Long holes 67. Adjusting bolt 68 . Hook 69. -70. Fixed body 71. End side 72. Plee bolt 73. Holding frame 74. Open 75. Frame-slider 76. Frame-slider 77. Clevey rods

Claims (11)

1. an instrument is used for tensioning or unclamps/open the Spring Card firmware, in particular for tensioning or unclamp/open the flexible pipe cuff with two control arms that radially outward stretch out, has

Tensioning portion, described tensioning portion has two slide blocks, and described slide block can move mutually and rabbet respectively on a control arm, wherein moves for realization tensioning in opposite directions, control arm and one is drawn towards the core of the flexible guy rope on the manual operating part and sheath is of coupled connections and

Tensioning stroke-automatic stopping device on actuating element, it is characterized in that, the design of push unit of actuating element (10) (20 to 22) and stop device (26 to 32) and cooperate should make does not need the ratchet stepping be scheduled to, adopts stroke stop to implement to have respectively a plurality of tensioning-strokes with weak point of random length before realizing necessary tensioning-combined stroke.

2. according to the described instrument of claim 1, it is characterized in that, actuating element (10) is designed to known being used to substantially and seals-and the mode of the actuating element of the cylinder-rifle of adhesives tube, has stroke with interrupted weak point, by push-plate (21) and arresting lever (26) but that forward direction is passed is smooth, by actuating element-body (13,14) push rod (15) that end wall (23) stretches out to both sides, wherein flexible guy rope-sheath (37) is fixed on the outer end of front of push rod (15), and flexible guy rope-core (38) is fixed on that near the push rod outlet actuating element-end wall (23) is gone up and the length at the top (14) of the actuating element (10) that wherein do not have spool only is used to hold the longitudinal guide of push-plate (21) and back-moving spring (22) and push rod (15) simultaneously.

3. according to the described instrument of claim 2, it is characterized in that a clamping body (35) is fixed on the front end of push rod (15), described clamping body radial deflection ground has the clamping hole (36) of the flexible traction rope of a push-rod hole that is parallel to clamping body (35).

4. according to the described instrument of claim 3, it is characterized in that, clamping body (35) and flexible traction rope-core (38) can be easy to respectively dismounting ground be fixed on push rod (15) and the body end wall (23) and flexible traction rope (11) for example the fixing bolt (72) by radially be fixed on the clamping body (35) maintenance thereby flexible traction rope-core (38) immovably is fixed in flexible traction rope-sheath (37).

5. according to the described instrument of claim 2, it is characterized in that fixed body (70) is removably disposed on casing-end wall (23), push rod (15) passes described fixed body and traction cable core (38) end is fixed on casing-end wall (on 230.

6. according to claim 3 or 4 described instruments, it is characterized in that clamping body (35) is designed for fixing a plurality of, preferred three flexible traction ropes (11) wherein are that benchmark is symmetrically arranged with a plurality of accommodation holes (36) with the push-rod hole.

7. according to the described instrument of claim 1, it is characterized in that the slide block of tensioning portion (12) (40,41) is the independent sliding shoe that relaxes, described sliding shoe substantially becomes U-shape ring to enclose two cuffing arms (2,3) by the transverse joint (42) that is provided with thereon.

8. according to the described instrument of claim 7, it is characterized in that flexible guy rope-core (11,38) upwards passes slide block (40) movably at tractive, simultaneously sheath (37) is fixed on second slide block (41) by clamping and the core (38) that stretches out.

9. according to the described instrument of claim 8, it is characterized in that core (38) can be fixed on second slide block (41) at least with winning, wherein the upside at slide block has a suspension seam (44) vertical with cover interpolation slit (42).

10. according to the described device of claim 7, it is characterized in that at least one slide block is one and passes through the hangable frame ring of slider arm (50).

11. according to the described device of claim 1, it is characterized in that, one banded spring arm (56) is fixed on the second tensioning slide block (41) in that tension direction is one-sided with stretching out, banded spring arm passes the first tensioning slide block (40) movably and has the suppending hole of a flexible guy rope-core (38) at its external part, simultaneously flexible guy rope-sheath (37) is fixed on the pressure body (60), and pressure body is to core (38) and the spring band edge is fixed and its distolateral tensioning under pressure abuts in when moving on first slide block (40) distolateral.

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